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Built 2026-10-19 (19 October 2026)

Heat wave in Australia, 24 September to 7 October 2023

Heat wave in Australia, 24 September to 7 October 2023: 374 records at 168 stations, peak on 30 September 2023. Closed.

Data as of . Last revised (2026-10-17).

Key Facts

  • Heat wave in Australia, 24 September to 7 October 2023 set or tied 374 station records at 168 stations.
  • It ran from 24 September 2023 to 7 October 2023 (14 days) and its peak day was 30 September 2023.
  • Status: closed.
  • Essendon Airport set a daily record high minimum temperature of 18.3 C (64.9 F) on 1 October 2023.
  • The busiest day was 2 October 2023 with 67 records.
  • The oldest broken record in the ranked list had stood for 78 years.

Footprint

24 September to 7 October 2023
Footprint of Heat wave in Australia, 24 September to 7 October 2023 The area covered by Heat wave in Australia, 24 September to 7 October 2023 is outlined, with 16 of the stations that set records marked, coloured by record type.
The area covered by Heat wave in Australia, 24 September to 7 October 2023 is outlined, with 16 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Heat wave in Australia, 24 September to 7 October 2023: stations that set records in the event
StationTypeValueDate
Essendon AirportRecord high minimum temperature18.3 C (64.9 F)2023-10-01
Bairnsdale AirportRecord high maximum temperature32.0 C (89.6 F)2023-09-30
Launceston AirportRecord high maximum temperature21.4 C (70.5 F)2023-09-29
EuclaRecord high minimum temperature19.6 C (67.3 F)2023-09-30
Streaky BayRecord high maximum temperature37.5 C (99.5 F)2023-09-30
Ceduna AMORecord high maximum temperature39.7 C (103.5 F)2023-09-30
Parafield AirportRecord high maximum temperature32.2 C (90.0 F)2023-09-30
Katoomba (Murri St)Record high maximum temperature27.2 C (81.0 F)2023-09-27
Richmond RaafRecord high maximum temperature36.7 C (98.1 F)2023-10-01
Gunnedah Resource CentreRecord high minimum temperature18.5 C (65.3 F)2023-10-01
Gulgong Post OfficeRecord high minimum temperature18.4 C (65.1 F)2023-10-04
Williamtown RaafRecord high minimum temperature16.9 C (62.4 F)2023-10-02
Lady Elliot IslandRecord high maximum temperature29.1 C (84.4 F)2023-10-04
EdithburghRecord high maximum temperature33.6 C (92.5 F)2023-09-30
Cape Jaffa (the Limestone)Record high maximum temperature23.7 C (74.7 F)2023-09-24
KeithRecord high maximum temperature32.8 C (91.0 F)2023-09-30

Records per Day

Peak day 66
Records per day during Heat wave in Australia, 24 September to 7 October 2023 Records set or tied each day from 24 September 2023 to 7 October 2023. The most in one day was 67 on 2 October 2023. 0 20 40 60 80 09-2409-2609-2809-3010-0210-0410-06
Records set or tied each day from 24 September 2023 to 7 October 2023. The most in one day was 67 on 2 October 2023.
Records per day during Heat wave in Australia, 24 September to 7 October 2023
DateRecords
2023-09-246
2023-09-2518
2023-09-2610
2023-09-277
2023-09-289
2023-09-2945
2023-09-3066
2023-10-0163
2023-10-0267
2023-10-0339
2023-10-0429
2023-10-0512
2023-10-062
2023-10-071

Top Records by Margin

Margin over the record replaced
Top records of Heat wave in Australia, 24 September to 7 October 2023 ranked by margin
Edithburgh, 09-307.7 C (13.9 F)
Keith, 09-305.0 C (9.0 F)
Gulgong Post Office, 10-044.9 C (8.8 F)
Essendon Airport, 10-014.7 C (8.5 F)
Eucla, 09-304.6 C (8.3 F)
Cape Jaffa (the Limestone), 09-244.6 C (8.3 F)
Ceduna AMO, 09-304.1 C (7.4 F)
Katoomba (Murri St), 09-273.8 C (6.8 F)
Bairnsdale Airport, 09-303.6 C (6.5 F)
Streaky Bay, 09-302.9 C (5.2 F)
Richmond Raaf, 10-012.5 C (4.5 F)
Launceston Airport, 09-292.0 C (3.6 F)
Parafield Airport, 09-302.0 C (3.6 F)
Lady Elliot Island, 10-041.6 C (2.9 F)
Essendon Airport, 09-291.5 C (2.7 F)

Margin is how far the new value is beyond the record it replaced. Ties are not shown.

Margin Against Age of the Broken Record

Margin against age of the broken record in Heat wave in Australia, 24 September to 7 October 2023 374 records plotted by how far they beat the old record (across) and how many years the old record had stood (up). Long standing records beaten by a wide margin sit in the top right. 0 20 40 60 80 0.02.04.06.08.0 Margin (C) Years the old record stood
374 records plotted by how far they beat the old record (across) and how many years the old record had stood (up). Long standing records beaten by a wide margin sit in the top right.
Margin against age of the broken record in Heat wave in Australia, 24 September to 7 October 2023
Margin (C)Years the old record stood
4.773
3.678
2.072
4.653
2.942
1.578
4.161
2.068
3.857
2.561
0.178
0.474
4.940
1.640
0.270
7.79
4.621
0.861
0.169
5.029
0.261
0.821
0.557
0.236
0.660
3.724
2.945
2.842
0.561
1.848
2.53
1.524
4.321
2.049
3.024
2.242
0.945
4.324
3.732
1.046
0.549
1.246
3.232
4.121
1.742
3.821
4.424
1.842
0.552
0.652
1.741
0.618
3.224
2.434
1.542
0.442
1.829
1.238
0.546
2.132
2.040
0.341
2.729
0.936
2.832
1.042
1.042
0.945
1.142
0.125
4.724
2.624
2.036
0.549
0.945
1.042
2.220
2.629
0.917
1.140
0.542
1.99
2.032
2.724
1.142
0.242
0.942
3.024
4.314
1.534
2.324
0.545
2.124
0.442
1.129
3.221
1.321
1.241
3.724
1.824
2.824
2.234
0.742
0.642
0.542
0.542
4.416
4.614
3.224
3.514
0.841
0.345
0.742
5.64
2.229
0.542
4.116
3.99
0.142
0.142
0.342
0.142
2.232
0.242
3.124
4.116
4.84
1.224
2.424
0.342
2.79
1.816
0.43
1.724
1.829
0.112
0.728
0.928
0.634
3.014
2.624
2.116
2.724
1.424
2.521
0.232
1.721
1.921
0.112
0.229
0.59
0.429
2.08
0.236
1.121
0.136
1.721
4.24
2.513
1.128
0.626
1.832
3.813
2.124
2.224
0.136
1.624
0.632
1.629
0.532
3.78
1.521
1.721
1.316
1.10
1.124
0.432
2.516
2.218
3.513
2.124
1.724
3.913
2.421
1.424
2.713
3.513
2.013
2.121
1.821
3.09
1.68
2.84
1.125
1.716
1.221
0.828
1.014
1.625
0.712

Compared With Other Events

Station records per event
Station records in Heat wave in Australia, 24 September to 7 October 2023 compared with similar events
Heat wave in United States and Mexico, 16 January to 14 February 20249,869 records
Heat wave in United States, 28 January to 24 February 20266,528 records
Heat wave in United States and Mexico, 24 May to 19 June 20205,047 records
Heat wave in United States and Mexico, 26 March to 17 April 20213,669 records
Heat wave in Germany and 49 other countries, 18 December 2021 to 15 January 20223,626 records
Heat wave in Australia, 24 September to 7 October 2023 (this event)374 records

Every Record Set

20 of 374
Every record set or tied during Heat wave in Australia, 24 September to 7 October 2023, in date order
DateStationRecordValueMarginYears stoodSignificance
2023-09-24Cape Jaffa (the Limestone)Record high maximum temperature23.7 C (74.7 F)4.6 C (8.3 F)2127 of 100 (Routine)
2023-09-26Bairnsdale AirportRecord high minimum temperature11.6 C (52.9 F)0.1 C (0.2 F)7831 of 100 (Routine)
2023-09-27Katoomba (Murri St)Record high maximum temperature27.2 C (81.0 F)3.8 C (6.8 F)5731 of 100 (Routine)
2023-09-29Launceston AirportRecord high maximum temperature21.4 C (70.5 F)2.0 C (3.6 F)7236 of 100 (Notable)
2023-09-29Essendon AirportRecord high maximum temperature29.1 C (84.4 F)1.5 C (2.7 F)7835 of 100 (Notable)
2023-09-30Bairnsdale AirportRecord high maximum temperature32.0 C (89.6 F)3.6 C (6.5 F)7840 of 100 (Notable)
2023-09-30EuclaRecord high minimum temperature19.6 C (67.3 F)4.6 C (8.3 F)5335 of 100 (Notable)
2023-09-30Streaky BayRecord high maximum temperature37.5 C (99.5 F)2.9 C (5.2 F)4235 of 100 (Notable)
2023-09-30Ceduna AMORecord high maximum temperature39.7 C (103.5 F)4.1 C (7.4 F)6133 of 100 (Routine)
2023-09-30Parafield AirportRecord high maximum temperature32.2 C (90.0 F)2.0 C (3.6 F)6832 of 100 (Routine)
2023-09-30EdithburghRecord high maximum temperature33.6 C (92.5 F)7.7 C (13.9 F)928 of 100 (Routine)
2023-09-30KeithRecord high maximum temperature32.8 C (91.0 F)5.0 C (9.0 F)2926 of 100 (Routine)
2023-10-01Essendon AirportRecord high minimum temperature18.3 C (64.9 F)4.7 C (8.5 F)7344 of 100 (Notable)
2023-10-01Richmond RaafRecord high maximum temperature36.7 C (98.1 F)2.5 C (4.5 F)6131 of 100 (Routine)
2023-10-01Gunnedah Resource CentreRecord high minimum temperature18.5 C (65.3 F)0.4 C (0.7 F)7430 of 100 (Routine)
2023-10-02Williamtown RaafRecord high minimum temperature16.9 C (62.4 F)0.2 C (0.4 F)7029 of 100 (Routine)
2023-10-02Gunnedah Resource CentreRecord high minimum temperature17.5 C (63.5 F)0.8 C (1.4 F)6127 of 100 (Routine)
2023-10-04Gulgong Post OfficeRecord high minimum temperature18.4 C (65.1 F)4.9 C (8.8 F)4030 of 100 (Routine)
2023-10-04Lady Elliot IslandRecord high maximum temperature29.1 C (84.4 F)1.6 C (2.9 F)4029 of 100 (Routine)
2023-10-04Gunnedah Resource CentreRecord high minimum temperature18.7 C (65.7 F)0.1 C (0.2 F)6927 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 374 records the event counts. The counts above use the full total.

Download the Data

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17. Events are found by this site from station records and are not official designations. Records are provisional until reprocessed.